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Foliar Feed Epsom Salts: Apply this and Have an Ideal Garden

Do you want your plants to stay in perfect health and give you more yield? Then we suggest you Go Organic. Yes, you heard that right! Gone were the days when people used to think growing plants organically is a traditional and old way. Now, experts can’t stress enough the importance of organic materials in the garden. Foliar Feed Epsom Salts is one of the organic methods to grow your garden eco-friendly.

But you must be wondering is it really a miracle that will serve all purposes? Sorry to burst the bubble but it is not what you think! So, what are its limitations? Meanwhile why some experts have called it a necessity for many plants? Enough about asking questions and let’s dive straight into the topic for shocking answers.

What is Epsom Salt?

Using Epsom salt is one of the popular organic methods to improve plant’s health. Epsom salts have two main components: Sulfur and magnesium. It includes 13 Percent Sulfur and 10 Percent Magnesium. Gardeners who add eggshells, compost, banana peels, chicken bones also plan to add Epsom to enrich the soil with magnesium and sulfur.

Epsom salt has a variety of uses which include, fertilizer, foliar spray, soil amendment, and many more. Thus, we use Foliar feed of Epsom salt to obtain desirable outcomes from the plants. But how Epsom can be added? Epsom can either be added as a solution or sprayed on the plants directly to improve their health.

Benefits of Epsom Soil foliar feed:

Epsom salts foliar feed has the most amazing benefits:

  • Epsom salt produces more flowers on a plant.
  • You can get a higher yield from Epsom feed.
  • Your plants appear greener when you spray Epsom solution on them.
  • When Epsom is mixed into the soil, it aids in quick seed germination.
  • Epsom solution reduces the alkalinity of the soil as well. Thus, plants will show proper growth as the first hurdle, which is bad soil, is exterminated by the Epsom.
  • Roots and cell walls are developed properly due to Epsom.
  • Photosynthesis in leaves increases due to magnesium in the Epsom. So, more food is produced and the plant gives more production.
  • Epsom is cheap and is available in almost every drug store. It is also available in many grocery stores as well.
  • When the hydrated magnesium sulfate (Epsom) is sprinkled around the plants, It can irritate insects Thus, it also acts like an excellent pest- repellant.

We apply Epsom solution on plants like peppers, tomatoes, pumpkin, cucumber, spinach, lettuce, peas, etc. Two methods are generally used to apply this solution: Fertilizer and spray. After Reading the benefits and methods of application, Now you also know the answer to the most asked questions Why & How to Use Epsom Salt in Your Vegetable.

National Gardening Association conducted some tests on Epsom. Two different types of plants were under trial which was grown all over the USA. Two-thirds of analysts found that those plants which were treated with Epsom showed much better results than those grown without Epsom feed. Lands treated with Epsom produced larger fruits, had more flowers, and greener foliage than those grown without Epsom.

However, another study was conducted by Washington State University on Epsom. According to the study, Epsom is good to use but not that great and you should not solely rely on it. Moreover, it stated that Epsom spray has the potential to only improve the condition of nutrient-deficient plants and not to bring it into the stellar range.

When to Add Foliar Feed Epsom Salts

So, now it is time to talk about when you can add the Epsom feed. There are not many articles out there online which deal with this portion. So, stay active and learn what we have to say.

We add Epsom salt when:

  • Before sowing or transplanting, add Epsom solution.
  • Spray Epsom solution when it’s time for flowers to bloom.
  • Add Epsome to those areas were magnesium is low in the soil. But how can you know that? (We have discussed it later in this article!).
  • Those plants which require magnesium to give fruits. Plants like peppers, pumpkin, cucumber, roses, tomatoes require more magnesium levels to give the desired results. So, such crops are given Epsom solution either in the form of fertilizer or in the form of a spray.

Generally, to make an Epsom feed fertilizer (or even a spray) we add 2 Tablespoons (30 ml) of Epsom salt in a gallon of water. It happens in most plants. Apply this at least once a month to obtain desirable results from plants. One day in a month, add this solution instead of water. Moreover, the growth of plants slows down in hot weather. Under such conditions, apply one more solution of Epsom. This time, add one tablespoon of Epsom in a gallon of water and apply it before sunrise.

Foliar Feed Epsom Salts spray
Spraying Epsom Solution on plants.

How to Apply Foliar Feed Epsom Salts?

Epsom is applied in two forms:

  • Spray
  • Fertilizer

Want to know how to use Epsom salts as a fertilizer? For peppers and tomatoes, add one tablespoon of Epsom in a gallon of water and apply it around tomato and peppers transplants. You can either spray the seedlings or provide this solution to the soil.

Moreover, after transplanting, add this solution in the first bloom and then apply the third batch when the fruit will start ripening.

Epsom Salt dosage rates are different in different plants. For leafy vegetables, add two tablespoons (30 ml) in one gallon of water. Then, sprinkle it on the plants in the form of fertilizer. Do this at least once a month. Moreover, if required, you can also add another Epsom solution within a month but this time add 1 tablespoon of Epsom in the one gallon of water. However, we recommend you to be careful while adding more Epsom as it can lead to the accumulation of salts. There is the answer to one of the most asked questions related to this, how to foliar spray Epsom salts on vegetable plants.

In the case of roses, add 1 tablespoon of Epsom in a gallon of water and make a foliar spray. Apply this spray for each foot (31 cm) of shrub’s height. Dosage for Epsom Salt foliar spray should not be increased than recommended. Moreover, timing is also important while adding anything organic, in the case of Epsom, adding it in springtime is better.

In Roses, in the springtime, flowers are bloomed. So, the extra energy of plants is being spent on the formation of buds and then opening it. Adding Epsom at the time of bud formation and flower blooming will increase the beauty of plants and will help them produce more flowers. So, grow your dream garden by adding Epsom solution in garden.

Foliar Feed Epsom Salts fertilizer
Epsom salt is also used as a fertilizer.

Problems with Foliar Feed Epsom Salts

There is only one major problem with Epsom salt. It does not contain three major nutrients a plant needs: Nitrogen, Phosphorus, and Potassium. It only consists of trace minerals: magnesium and sulfur.

But that does not mean magnesium and sulfur have no importance. Without magnesium, leaves will start getting yellow from the veins. Moreover, the photosynthesis rate will drop due to this. Magnesium promotes chlorophyll production which does photosynthesis. Furthermore, for seed germination and root development, magnesium in good quantity is necessary. This shows you cannot ignore magnesium’s importance for plant health.

Similarly, deficiency of Sulfur is also detrimental for plants. Sulfur deficiency causes plants to be short (stunted growth) with low fruit quality. Moreover, maturity is delayed in this as well and the plant appears to be in light shade. So, give proper respect to magnesium and sulfur for better output from plants.

To treat alkaline soil, we can use Epsom feed. Epsom increases the acidity of the soil and reduces the alkalinity. Thus, it contributes to better production. But you have noticed one point here, Epsom cannot be added into an already acidic soil.
So, how can you know which type of soil you have? The answer is, do a soil pH test. A soil pH can be done by machines that are easily available online. If the number it gives is 7, then your soil is neutral. If it gives less than 7, then you have acidic soil. If it gives above 7 reading then you have basic soil. Try to avoid both extremes for the best results.

Moreover, a soil test is also conducted to know which nutrients the soil is lacking. So, add Epsom feed if the soil is lacking magnesium and sulfur.

Also, be careful while applying Epsom fertilizer. It can lead to excess salts in the soil which will negatively impact root growth. Moreover, extra salt can even enter plants and cause burns. So, take extra care when you add Epsom fertilizer.

In addition to this, you should know what are the requirements of your plants. For example, if you are growing beans, you must be aware that it can grow in low magnesium levels in the soil as well. So, there is no need to add Epsom solution if you are growing these crops.

Signs when you should Add Foliar feed epsom salts?

Following are the signs that tell you about you need to add Epsom solution. If you don’t take care of the plant’s magnesium intake, then they will have stunted growth along with some other undesirable traits. Thus, look for magnesium deficiency signs.

  • If the yellowing starts around the veins of the leaf
  • Leaves start to curl due to deficiency of magnesium
  • Fruits ripe slowly.
  • Fruits, even though they are ripe slowly, are not sweet.

To remedy this, you should add something organic and rich in magnesium. So, I have a question for you, What should we add? Yes, you guessed that right, We will add the Epsom feed. Now you know the importance of Foliar Feed Epsom Salts.

Final Words

All-inclusive, everyone should adopt some measures to promote organic gardening. Foliar feed Epsom salts are the best organic source of magnesium and sulfur. Plants require these nutrients to give more yield. Add them in the form of foliar spray or fertilizer and see the positive results yourself. But the condition is that you must add it in the recommended amount at the recommended time which we have told in this article above. So, follow these guidelines and enjoy a healthy garden.

Oh and also, don’t hesitate to ask us anything in the comment section down below and we will get back to you as soon as possible. We have also answered FAQs to further facilitate you.


How do you spray plants with Epsom salt?

Make a mixture of one or two tablespoons of Epsom in one gallon of water and put it in the spray bottle. Then, mist the plants to get a greener look from them. Do this once in a month at least.

Can you put too much Epsom salt on plants?

No, you cannot add too much Epsom. Too much Epsom will accumulate in the soil and it will also go into the plants with water. Hence this unnecessary uptake of nutrients will cause a burn.

What plants can Epsom salts be used on?

Epsom can be used on those plants that require more magnesium to grow properly. Such plants are peppers, pumpkin, tomatoes, cucumbers, roses, and leafy vegetables. It is not recommended for those plants which do not require magnesium for proper growth.

Do you put Epsom salts on tomato plants?

Yes, we do put solutions of Epsom salts on tomato plants in the form of a spray. Moreover, you can add Epsom granules around the transplants or seedlings of tomatoes as well.

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I am a graduate in Agriculture Sciences and have been doing gardening for over 7 years. I am also a professional and certified Article & Blog Writer. I am happy to share my years of experience in gardening with all of you through my writings. In addition to this, I do extensive research on every topic to enrich readers with valuable knowledge.